摘要：
Problem B. Harvest of Apples Problem Description There are $n$ apples on a tree, numbered from $1$ to $n$.Count the number of ways to pick at most $m$ 阅读全文
摘要：
#include <iostream> #include <string> #include <cstdio> #include <cmath> #include <cstring> #include <algorithm> #include <vector> #include <queue> #i 阅读全文